The police then searched the suspect’s house in Wieng Pa Pao district in Chiang Rai over the weekend and found 3,675 yaba pills and five more mobile phones, seven mobile phone batteries, 21 chargers and 100,000 baht in cash.

Investigators found that Wongsen became a prison officer in February and allegedly started selling methamphetamine and mobile phones immediately.

Local police will work with the regional narcotics division to expand the investigation and examine more of Mr Anond’s assets to find out whether he has a history of selling illegal drugs before working at the prison.